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Use of online self-testing system has been a very common phenomenon.
使用在线自测系统已是很普遍的现象。
youdao
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In an earlier Education story, we discussed the value of self-testing.
在此前的教育新闻中，我们讨论了自我测试的价值。
youdao
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In an earlier Education story, we discussed the value of self-testing.
在此前的教育新闻中，我们讨论了自我测试的价值。
youdao